Causes

The exact cause of Tourette syndrome isn't known, and there's no known way to prevent it. Tourette is a complex syndrome, likely caused by a combination of genetic and environmental factors. Theories about the causes of Tourette include:

Genetics. Tourette syndrome may be an inherited disorder. The specific genes involved in Tourette syndrome are still being defined, although one genetic mutation has been identified as a rare cause of Tourette syndrome.

Brain abnormalities. Certain chemicals in the brain that transmit nerve impulses (neurotransmitters) may play a role, including dopamine and serotonin.

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